// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_CHILD_V8_VALUE_CONVERTER_IMPL_H_
#define CONTENT_CHILD_V8_VALUE_CONVERTER_IMPL_H_

#include <map>

#include "base/compiler_specific.h"
#include "base/macros.h"
#include "content/common/content_export.h"
#include "content/public/child/v8_value_converter.h"

namespace base {
class BinaryValue;
class DictionaryValue;
class ListValue;
class Value;
}

namespace content {

class CONTENT_EXPORT V8ValueConverterImpl : public V8ValueConverter {
public:
    V8ValueConverterImpl();

    // V8ValueConverter implementation.
    void SetDateAllowed(bool val) override;
    void SetRegExpAllowed(bool val) override;
    void SetFunctionAllowed(bool val) override;
    void SetStripNullFromObjects(bool val) override;
    void SetStrategy(Strategy* strategy) override;
    v8::Local<v8::Value> ToV8Value(
        const base::Value* value,
        v8::Local<v8::Context> context) const override;
    std::unique_ptr<base::Value> FromV8Value(
        v8::Local<v8::Value> value,
        v8::Local<v8::Context> context) const override;

private:
    friend class ScopedAvoidIdentityHashForTesting;

    class FromV8ValueState;
    class ScopedUniquenessGuard;

    v8::Local<v8::Value> ToV8ValueImpl(v8::Isolate* isolate,
        v8::Local<v8::Object> creation_context,
        const base::Value* value) const;
    v8::Local<v8::Value> ToV8Array(v8::Isolate* isolate,
        v8::Local<v8::Object> creation_context,
        const base::ListValue* list) const;
    v8::Local<v8::Value> ToV8Object(
        v8::Isolate* isolate,
        v8::Local<v8::Object> creation_context,
        const base::DictionaryValue* dictionary) const;
    v8::Local<v8::Value> ToArrayBuffer(v8::Isolate* isolate,
        v8::Local<v8::Object> creation_context,
        const base::BinaryValue* value) const;

    std::unique_ptr<base::Value> FromV8ValueImpl(FromV8ValueState* state,
        v8::Local<v8::Value> value,
        v8::Isolate* isolate) const;
    std::unique_ptr<base::Value> FromV8Array(v8::Local<v8::Array> array,
        FromV8ValueState* state,
        v8::Isolate* isolate) const;

    // This will convert objects of type ArrayBuffer or any of the
    // ArrayBufferView subclasses.
    std::unique_ptr<base::Value> FromV8ArrayBuffer(v8::Local<v8::Object> val,
        v8::Isolate* isolate) const;

    std::unique_ptr<base::Value> FromV8Object(v8::Local<v8::Object> object,
        FromV8ValueState* state,
        v8::Isolate* isolate) const;

    // If true, we will convert Date JavaScript objects to doubles.
    bool date_allowed_;

    // If true, we will convert RegExp JavaScript objects to string.
    bool reg_exp_allowed_;

    // If true, we will convert Function JavaScript objects to dictionaries.
    bool function_allowed_;

    // If true, undefined and null values are ignored when converting v8 objects
    // into Values.
    bool strip_null_from_objects_;

    bool avoid_identity_hash_for_testing_;

    // Strategy object that changes the converter's behavior.
    Strategy* strategy_;

    DISALLOW_COPY_AND_ASSIGN(V8ValueConverterImpl);
};

} // namespace content

#endif // CONTENT_CHILD_V8_VALUE_CONVERTER_IMPL_H_
